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Extracting the 5th Harmonic
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March 14th 04, 09:27 PM
Paul Burridge
Posts: n/a
On 14 Mar 2004 10:01:00 -0800,
(R.Legg) wrote:
C2's small size (3.3pF)is attenuating any 5th harmonic current by 6db
into
Q2's base biasing network, in both posted versions.
Curious. Can you show some figures to back this claim up? (Not that I
don't believe you; just that I'd like to see how you arrived at this
view).
Biasing the first stage as classC in the second revision is a pretty
drastic change from the previous class A revision (100mW). Don't you
believe in tiny steps?
I've been trying nothing else *but* "tiny steps" for the last few
days. There's no harm in the ocassional quantum jump. :-)
By the way, when you post a waveform where traces are only identified
by node numbers, when the schematic provided is an image only, there's
no way we can know where the traces originate, unless you tell us.
My apologies. I'll try not to let it happen again.
--
The BBC: Licensed at public expense to spread lies.
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